TM 55-1520-240-T10-4.4 ERFS II SINGLE POINT PRESSURE REFUELING SYSTEM OPERATIONAL CHECK10-4.4INITIAL SETUPApplicable Configurations:WithTools:NoneMaterials:NonePersonnel Required:Medium Helicopter RepairerReferences:TM 55-1520-240-23TM 1-1560-312-10Equipment Condition:TM 55-1520-240-23:Electrical Power OffBattery ConnectedHydraulic Power OffTM 1-1560-312-10:ERFS II Fuel Control Panel ConnectedVisual Check of ERFS II Airframe ComponentsPerformed (Task 10-4.3)TASKRESULT1.Check that FUEL REFUEL circuit breaker (1) is closed.2.Set REFUEL STATION switch (2) to ON.3.Set ERFS II REFUEL VALVE switch (3) to OPEN.4Set ERFS II REFUEL VALVE switch (3) to CLOSE.FOLLOW-ON MAINTENANCE:TM 55-1520-240-23:Battery disconnected.If circuit breaker (1) is open, close it. If it opens again, goto task 10-4.5.IN-TRANSIT light (4) comes on during valve (5) operationand goes out when valve is open. Check that ERFS IIrefuel valve handle (6) is in OPEN position. If light (4)does not come on and handle is not at OPEN, go to task10-4.6. If light comes on and stays on but handle is not atOPEN, go to task 10-4.7. If light does not come on buthandle is at OPEN, go to task 10-4.8. If light comes onand stays on but handle is at OPEN, replace ERFS IIrefuel valve.IN-TRANSIT light (4) comes on during valve (5) operationand goes out when valve is closed. Check that ERFS IIrefuel valve handle (6) is in CLSD position. If light (4) doesnot come on and handle is not at CLSD, go to task 10-4.9.If light comes on and stays on but handle is at CLSD,replace ERFS II refuel valve.GO TO NEXT PAGE(10-183 blank)/10-184Change 22
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